GB759573A - Variable frequency oscillating system - Google Patents

Variable frequency oscillating system

Info

Publication number
GB759573A
GB759573A GB23111/54A GB2311154A GB759573A GB 759573 A GB759573 A GB 759573A GB 23111/54 A GB23111/54 A GB 23111/54A GB 2311154 A GB2311154 A GB 2311154A GB 759573 A GB759573 A GB 759573A
Authority
GB
United Kingdom
Prior art keywords
bridge
cathode
resistances
oscillator
amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB23111/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bendix Aviation Corp filed Critical Bendix Aviation Corp
Publication of GB759573A publication Critical patent/GB759573A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator

Landscapes

  • Amplifiers (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

759,573. Electric transducers. BENDIX AVIATION CORPORATION. Aug. 9, 1954 [Sept. 17, 1953], No. 23111/54. Class 40(1) [Also in Group XL(c)] Frequency modulation of an oscillator having valves V1, V2 back-coupled from the cathode of the second valve V2 to the cathode of the first through a coupling L1, C1 series resonant at the mean frequency of the oscillator is produced by applying a quadrature phase voltage from the junction of L1, C1 to an input of the first valve V1 after amplitude modulation in a balanced modulator bridge circuit 15. An amplifier 16 may precede the bridge modulator, and an amplifier or cathode follower 17 may follow it. The bridge arms may be resistances, one of them a strain gauge sensing element, or if the sensing element is an inductance or condenser, the arms may contain positive or negative reactances, with or without resistances. Or the bridge may be any device with input and output terminals, adjustable from a condition giving null output, e.g. a differential transformer 25, Fig. 3, with pick-up movable winding 25b for detecting movement, e.g. of the free end of an aneroid.
GB23111/54A 1953-09-17 1954-08-09 Variable frequency oscillating system Expired GB759573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US380746A US2782311A (en) 1953-09-17 1953-09-17 Bridge controlled oscillator

Publications (1)

Publication Number Publication Date
GB759573A true GB759573A (en) 1956-10-17

Family

ID=23502278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23111/54A Expired GB759573A (en) 1953-09-17 1954-08-09 Variable frequency oscillating system

Country Status (2)

Country Link
US (1) US2782311A (en)
GB (1) GB759573A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002159A (en) * 1957-12-30 1961-09-26 Daystrom Inc Oscillator
US3183455A (en) * 1960-08-25 1965-05-11 Electro Mechanical Res Inc Automatically stabilized oscillator circuits
US3254311A (en) * 1962-12-04 1966-05-31 Collins Corp G L Frequency-controllled phase shift oscillator

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923893A (en) * 1960-02-02 Phase
US2871356A (en) * 1955-07-14 1959-01-27 Peter G Sulzer Frequency-stabilized oscillator
US2988651A (en) * 1957-08-30 1961-06-13 Richard K Richards Regenerative pulse amplifier
US3054072A (en) * 1958-05-23 1962-09-11 Rca Corp Square wave generator with constant start-stop characteristics
US3042908A (en) * 1959-09-02 1962-07-03 Honeywell Regulator Co Fluid level sensor
US3271694A (en) * 1963-08-15 1966-09-06 Bissett Berman Corp Variable frequency phase shift oscillator
DE1276132B (en) * 1964-07-06 1968-08-29 Siemens Ag Electrical transmission link in the manner of a quadrupole with amplitude-dependent transmission rate
US3883826A (en) * 1971-07-15 1975-05-13 Ici Ltd Adjustable frequency oscillator with regenerative feedback and a coupling unit including a differential amplifier for adjusting the feedback
US4021756A (en) * 1975-07-02 1977-05-03 Zenith Radio Corporation Electric remote control transmitter
DE3000291C2 (en) * 1980-01-05 1982-06-09 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for converting a change in resistance into a change in frequency

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451858A (en) * 1945-01-26 1948-10-19 Gen Electric Controlled frequency oscillator
US2611873A (en) * 1950-02-24 1952-09-23 Frank M Gager Bridge oscillator
US2615956A (en) * 1951-01-05 1952-10-28 Schlumberger Well Surv Corp Borehole telemetering
US2659867A (en) * 1951-10-10 1953-11-17 Rca Corp Frequency modulated oscillator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002159A (en) * 1957-12-30 1961-09-26 Daystrom Inc Oscillator
US3183455A (en) * 1960-08-25 1965-05-11 Electro Mechanical Res Inc Automatically stabilized oscillator circuits
US3254311A (en) * 1962-12-04 1966-05-31 Collins Corp G L Frequency-controllled phase shift oscillator

Also Published As

Publication number Publication date
US2782311A (en) 1957-02-19

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